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Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell. It is classified as a strong acid. It is a component of the gastric acid in the digestive systems of most animal species, including humans.
Chemical formula Name CAS number N 2 H 4: ... hydrogen peroxide: 7722-84-1 HF: hydrofluoric acid: 7664-39-3 H 2 SO 4: sulfuric acid: 7664-93-9 HCl: hydrochloric acid ...
It has the chemical formula Si 2 H 2 O (or [Si 6 H 3 (OH) 3] x) and it is prepared by reacting calcium disilicide (CaSi 2), which has a puckered layer of silicon atoms, with dilute hydrochloric acid. This yellow solid was prepared from that route as early as 1900 by Charles Schenck Bradley (1853–1929), [ 7 ] a one-time associate of Thomas ...
At room temperature, it is a colorless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric water vapor. Hydrogen chloride gas and hydrochloric acid are important in technology and industry. Hydrochloric acid, the aqueous solution of hydrogen chloride, is also commonly given the formula HCl.
Commonly used mineral acids are sulfuric acid (H 2 SO 4), hydrochloric acid (HCl) and nitric acid (HNO 3); these are also known as bench acids. [1] Mineral acids range from superacids (such as perchloric acid) to very weak ones (such as boric acid). Mineral acids tend to be very soluble in water and insoluble in organic solvents.
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A strong acid, such as hydrochloric acid, at concentration 1 mol dm −3 has a pH of 0, while a strong alkali like sodium hydroxide, at the same concentration, has a pH of 14. Since pH is a logarithmic scale, a difference of one in pH is equivalent to a tenfold difference in hydrogen ion concentration.
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